20265520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23029}}^1$

素因数の和:23053

約数の個数: 40

約数和(自身を含む): 51402960

約数和(自身を除く): 31137440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23029, 46058, 92116, 115145, 184232, 230290, 253319, 368464, 460580, 506638, 921160, 1013276, 1266595, 1842320, 2026552, 2533190, 4053104, 5066380, 10132760, 20265520]

約数ペア:

[(1, 20265520), (2, 10132760), (4, 5066380), (5, 4053104), (8, 2533190), (10, 2026552), (11, 1842320), (16, 1266595), (20, 1013276), (22, 921160), (40, 506638), (44, 460580), (55, 368464), (80, 253319), (88, 230290), (110, 184232), (176, 115145), (220, 92116), (440, 46058), (880, 23029)]